We do not have an out-of-the-box integration with OCS Inventory. We offer several other OOTB integrations with discovery tools as referenced under Remedyforce Administration (ex. SCCM, BCM, ADDM, etc...).

We are targeting agentless discovery as a new capability in Summer 16 (safe harbor). Although OCS Inventory is open-source, it requires an agent. Depending on your requirements, agentless may meet your needs.

As a member of the Summer 16 EAP program, you have access to more detail on the upcoming enhancements.